Upon further testing, this is related to displayport hotplug. These particular monitors have no option to disable this feature. This was never a problem on Plasma 5.27 Wayland since disabling KScreen would resolve the issue. This is now broken since, now on Plasma 6, KWin directly handles this with no clear way to disable it.

Thank you for the bug report. Unfortunately the backtrace is incomplete and missing debug symbols for the following lines that we need to figure out exactly what's going wrong:

#9  0x00007fee001e4443 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6

Could you please install debug symbols and attach a new backtrace generated by using `coredumpctl gdb` in a terminal window? See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl for details about how to do this. Thanks again!

(In reply to TraceyC from comment #2)
> Thank you for the bug report. Unfortunately the backtrace is incomplete and
> missing debug symbols for the following lines that we need to figure out
> exactly what's going wrong:
> 
> #9  0x00007fee001e4443 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
> 
> Could you please install debug symbols and attach a new backtrace generated
> by using `coredumpctl gdb` in a terminal window? See
> https://community.kde.org/Guidelines_and_HOWTOs/Debugging/
> How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl
> for details about how to do this. Thanks again!

Here is the backtrace for that event

joshua@joshuas-hackpro:~$ sudo coredumpctl gdb 3138
           PID: 3138 (kwin_wayland)
           UID: 1000 (joshua)
           GID: 1000 (joshua)
        Signal: 11 (SEGV)
     Timestamp: Fri 2025-03-21 10:42:50 PDT (4 days ago)
  Command Line: /usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :1 --xwayland-xauthority /run/user/1000/xauth_ATRJGF --xwayland
    Executable: /usr/bin/kwin_wayland
 Control Group: /user.slice/user-1000.slice/user@1000.service/session.slice/plasma-kwin_wayland.service
          Unit: user@1000.service
     User Unit: plasma-kwin_wayland.service
         Slice: user-1000.slice
     Owner UID: 1000 (joshua)
       Boot ID: f1cbacc60c8f4baf903d580eadfef59b
    Machine ID: 81c6599577e54b39b939c11e630eff79
      Hostname: joshuas-hackpro
       Storage: /var/lib/systemd/coredump/core.kwin_wayland.1000.f1cbacc60c8f4baf903d580eadfef59b.3138.1742578970000000.zst (present)
  Size on Disk: 15.6M
       Message: Process 3138 (kwin_wayland) of user 1000 dumped core.
                
                Module libblkid.so.1 from deb util-linux-2.40.4-5.amd64
                Module libgomp.so.1 from deb gcc-14-14.2.0-17.amd64
                Module libatomic.so.1 from deb gcc-14-14.2.0-17.amd64
                Module libmount.so.1 from deb util-linux-2.40.4-5.amd64
                Module libzstd.so.1 from deb libzstd-1.5.6+dfsg-2.amd64
                Module libgcc_s.so.1 from deb gcc-14-14.2.0-17.amd64
                Module libudev.so.1 from deb systemd-257.4-3.amd64
                Module libstdc++.so.6 from deb gcc-14-14.2.0-17.amd64
                Module libsystemd.so.0 from deb systemd-257.4-3.amd64
                Stack trace of thread 3138:
                #0  0x00007fedffa9e8ac __pthread_kill_implementation (libc.so.6 + 0x948ac)
                #1  0x00007fedffa49c82 __GI_raise (libc.so.6 + 0x3fc82)
                #2  0x00007fee034246d2 _ZN6KCrash19defaultCrashHandlerEi (libKF6Crash.so.6 + 0x56d2)
                #3  0x00007fedffa49db0 n/a (libc.so.6 + 0x3fdb0)
                
                Stack trace of thread 3196:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3192:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa995ed __syscall_cancel (libc.so.6 + 0x8f5ed)
                #3  0x00007fedffb0de6e __GI_ppoll (libc.so.6 + 0x103e6e)
                #4  0x00007fedfea7324c n/a (libglib-2.0.so.0 + 0x5d24c)
                #5  0x00007fedfea738e0 g_main_context_iteration (libglib-2.0.so.0 + 0x5d8e0)
                #6  0x00007fee003a62a3 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a62a3)
                #7  0x00007fee00198893 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x198893)
                #8  0x00007fee0026a5fc _ZN7QThread4execEv (libQt6Core.so.6 + 0x26a5fc)
                #9  0x00007fee00f74f3e n/a (libQt6DBus.so.6 + 0x35f3e)
                #10 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #11 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #12 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3198:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3200:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3199:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3202:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3213:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c455 __pthread_cond_wait_common (libc.so.6 + 0x92455)
                #4  0x00007fee02ef8bd3 n/a (libkwin.so.6 + 0x4f8bd3)
                #5  0x00007fee02ef9209 n/a (libkwin.so.6 + 0x4f9209)
                #6  0x00007fee02ef96ad n/a (libkwin.so.6 + 0x4f96ad)
                #7  0x00007fedffaa1b17 __pthread_once_slow (libc.so.6 + 0x97b17)
                #8  0x00007fedffaa1b89 ___pthread_once (libc.so.6 + 0x97b89)
                #9  0x00007fee02ef5c78 n/a (libkwin.so.6 + 0x4f5c78)
                #10 0x00007fee00263035 n/a (libQt6Core.so.6 + 0x263035)
                #11 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #12 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #13 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3201:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3214:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fee02ef8ef1 n/a (libkwin.so.6 + 0x4f8ef1)
                #5  0x00007fee02ef9209 n/a (libkwin.so.6 + 0x4f9209)
                #6  0x00007fee02ef96ad n/a (libkwin.so.6 + 0x4f96ad)
                #7  0x00007fedffaa1b17 __pthread_once_slow (libc.so.6 + 0x97b17)
                #8  0x00007fedffaa1b89 ___pthread_once (libc.so.6 + 0x97b89)
                #9  0x00007fee02ef5c78 n/a (libkwin.so.6 + 0x4f5c78)
                #10 0x00007fee00263035 n/a (libQt6Core.so.6 + 0x263035)
                #11 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #12 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #13 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3212:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c455 __pthread_cond_wait_common (libc.so.6 + 0x92455)
                #4  0x00007fee02ef8bd3 n/a (libkwin.so.6 + 0x4f8bd3)
                #5  0x00007fee02ef9209 n/a (libkwin.so.6 + 0x4f9209)
                #6  0x00007fee02ef96ad n/a (libkwin.so.6 + 0x4f96ad)
                #7  0x00007fedffaa1b17 __pthread_once_slow (libc.so.6 + 0x97b17)
                #8  0x00007fedffaa1b89 ___pthread_once (libc.so.6 + 0x97b89)
                #9  0x00007fee02ef5c78 n/a (libkwin.so.6 + 0x4f5c78)
                #10 0x00007fee00263035 n/a (libQt6Core.so.6 + 0x263035)
                #11 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #12 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #13 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3226:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3229:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3257:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa995ed __syscall_cancel (libc.so.6 + 0x8f5ed)
                #3  0x00007fedffb0de6e __GI_ppoll (libc.so.6 + 0x103e6e)
                #4  0x00007fedfea7324c n/a (libglib-2.0.so.0 + 0x5d24c)
                #5  0x00007fedfea738e0 g_main_context_iteration (libglib-2.0.so.0 + 0x5d8e0)
                #6  0x00007fee003a62a3 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a62a3)
                #7  0x00007fee00198893 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x198893)
                #8  0x00007fee0026a5fc _ZN7QThread4execEv (libQt6Core.so.6 + 0x26a5fc)
                #9  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #10 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #11 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3218:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa995ed __syscall_cancel (libc.so.6 + 0x8f5ed)
                #3  0x00007fedffb0de6e __GI_ppoll (libc.so.6 + 0x103e6e)
                #4  0x00007fedfea7324c n/a (libglib-2.0.so.0 + 0x5d24c)
                #5  0x00007fedfea738e0 g_main_context_iteration (libglib-2.0.so.0 + 0x5d8e0)
                #6  0x00007fee003a62a3 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a62a3)
                #7  0x00007fee00198893 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x198893)
                #8  0x00007fee0026a5fc _ZN7QThread4execEv (libQt6Core.so.6 + 0x26a5fc)
                #9  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #10 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #11 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 6704:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3197:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3215:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fee02ef8ef1 n/a (libkwin.so.6 + 0x4f8ef1)
                #5  0x00007fee02ef9209 n/a (libkwin.so.6 + 0x4f9209)
                #6  0x00007fee02ef96ad n/a (libkwin.so.6 + 0x4f96ad)
                #7  0x00007fedffaa1b17 __pthread_once_slow (libc.so.6 + 0x97b17)
                #8  0x00007fedffaa1b89 ___pthread_once (libc.so.6 + 0x97b89)
                #9  0x00007fee02ef5c78 n/a (libkwin.so.6 + 0x4f5c78)
                #10 0x00007fee00263035 n/a (libQt6Core.so.6 + 0x263035)
                #11 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #12 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #13 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3258:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa995ed __syscall_cancel (libc.so.6 + 0x8f5ed)
                #3  0x00007fedffb1aa6d epoll_wait (libc.so.6 + 0x110a6d)
                #4  0x00007feddc0f18b6 n/a (libspa-support.so + 0x1c8b6)
                #5  0x00007feddc0dcb7d n/a (libspa-support.so + 0x7b7d)
                #6  0x00007fedba7bdc75 n/a (libpipewire-0.3.so.0 + 0xb2c75)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3227:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3260:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 183620:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c25d __pthread_cond_wait_common (libc.so.6 + 0x9225d)
                #4  0x00007fee002df7b9 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2df7b9)
                #5  0x00007fee002e2bee n/a (libQt6Core.so.6 + 0x2e2bee)
                #6  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 6703:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 87433:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 183622:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c25d __pthread_cond_wait_common (libc.so.6 + 0x9225d)
                #4  0x00007fee002df7b9 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2df7b9)
                #5  0x00007fee002e2bee n/a (libQt6Core.so.6 + 0x2e2bee)
                #6  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 183623:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c25d __pthread_cond_wait_common (libc.so.6 + 0x9225d)
                #4  0x00007fee002df7b9 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2df7b9)
                #5  0x00007fee002e2bee n/a (libQt6Core.so.6 + 0x2e2bee)
                #6  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 183621:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c25d __pthread_cond_wait_common (libc.so.6 + 0x9225d)
                #4  0x00007fee002df7b9 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2df7b9)
                #5  0x00007fee002e2bee n/a (libQt6Core.so.6 + 0x2e2bee)
                #6  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3228:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                ELF object binary architecture: AMD x86-64

GNU gdb (Debian 16.2-2) 16.2
Copyright (C) 2024 Free Software Foundation, Inc.
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Reading symbols from /usr/bin/kwin_wayland...
(No debugging symbols found in /usr/bin/kwin_wayland)

warning: Can't open file /memfd:kwayland-shared (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:unknown-usage:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:JITCode:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:wayland-shm (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:xwayland-shared (deleted) during file-backed mapping note processing

warning: Can't open file /home/joshua/.cache/plasma_theme_Sweet-mars-custom.kcache (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:wayland-cursor (deleted) during file-backed mapping note processing

warning: Can't open file /dev/shm/.org.chromium.Chromium.tWYgnq (deleted) during file-backed mapping note processing

warning: Can't open file /dev/shm/.org.chromium.Chromium.8T3A61 (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:JSVMStack:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:gdk-wayland (deleted) during file-backed mapping note processing
[New LWP 3138]
[New LWP 3196]
[New LWP 3192]
[New LWP 3198]
[New LWP 3200]
[New LWP 3199]
[New LWP 3202]
[New LWP 3213]
[New LWP 3201]
[New LWP 3214]
[New LWP 3212]
[New LWP 3226]
[New LWP 3229]
[New LWP 3257]
[New LWP 3218]
[New LWP 6704]
[New LWP 3197]
[New LWP 3215]
[New LWP 3258]
[New LWP 3227]
--Type <RET> for more, q to quit, c to continue without paging--
[New LWP 3260]
[New LWP 183620]
[New LWP 6703]
[New LWP 87433]
[New LWP 183622]
[New LWP 183623]
[New LWP 183621]
[New LWP 3228]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :1 --xwayland-xauthority /run/user/1000/xauth_ATRJGF --xwayland'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0)
    at ./nptl/pthread_kill.c:44

warning: 44     ./nptl/pthread_kill.c: No such file or directory
[Current thread is 1 (Thread 0x7fedf9dac280 (LWP 3138))]
(gdb) bt
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0)
    at ./nptl/pthread_kill.c:44
#1  0x00007fedffa9e94f in __pthread_kill_internal (threadid=<optimized out>, signo=11) at ./nptl/pthread_kill.c:89
#2  0x00007fedffa49c82 in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26
#3  0x00007fee034246d2 in KCrash::defaultCrashHandler(int) () at /lib/x86_64-linux-gnu/libKF6Crash.so.6
#4  0x00007fedffa49db0 in <signal handler called> () at /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ??? ()
#6  0x00007fee02e77b90 in KWin::Workspace::assignBrightnessDevices() () at /lib/x86_64-linux-gnu/libkwin.so.6
#7  0x00007fee02e8130e in KWin::Workspace::updateOutputConfiguration() () at /lib/x86_64-linux-gnu/libkwin.so.6
#8  0x00007fee02e81d9f in KWin::Workspace::slotOutputBackendOutputsQueried() () at /lib/x86_64-linux-gnu/libkwin.so.6
#9  0x00007fee001e4443 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#10 0x00007fee02eea30a in KWin::DrmBackend::updateOutputs() () at /lib/x86_64-linux-gnu/libkwin.so.6
#11 0x00007fee02eeaab0 in KWin::DrmBackend::handleUdevEvent() () at /lib/x86_64-linux-gnu/libkwin.so.6
#12 0x00007fee001e4443 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#13 0x00007fee001e6db3 in QSocketNotifier::activated(QSocketDescriptor, QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#14 0x00007fee001e98fb in QSocketNotifier::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#15 0x00007fee011b49b5 in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
    at /lib/x86_64-linux-gnu/libQt6Widgets.so.6
#16 0x00007fee001965b0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#17 0x00007fee002e3e64 in QEventDispatcherUNIXPrivate::activateSocketNotifiers() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#18 0x00007fee002e44b9 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /lib/x86_64-linux-gnu/libQt6Core.so.6
#19 0x00007fee00bba751 in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /lib/x86_64-linux-gnu/libQt6Gui.so.6
#20 0x00007fee00198893 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#21 0x00007fee0019a18a in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#22 0x000055d67d676498 in ??? ()
#23 0x00007fedffa33ca8 in __libc_start_call_main
    (main=main@entry=0x55d67d674510, argc=argc@entry=14, argv=argv@entry=0x7fffe594adb8)
    at ../sysdeps/nptl/libc_start_call_main.h:58
#24 0x00007fedffa33d65 in __libc_start_main_impl
    (main=0x55d67d674510, argc=14, argv=0x7fffe594adb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe594ada8) at ../csu/libc-start.c:360
#25 0x000055d67d678121 in ??? ()
(gdb) 
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0)
    at ./nptl/pthread_kill.c:44
#1  0x00007fedffa9e94f in __pthread_kill_internal (threadid=<optimized out>, signo=11) at ./nptl/pthread_kill.c:89
#2  0x00007fedffa49c82 in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26
#3  0x00007fee034246d2 in KCrash::defaultCrashHandler(int) () at /lib/x86_64-linux-gnu/libKF6Crash.so.6
#4  0x00007fedffa49db0 in <signal handler called> () at /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ??? ()
#6  0x00007fee02e77b90 in KWin::Workspace::assignBrightnessDevices() () at /lib/x86_64-linux-gnu/libkwin.so.6
#7  0x00007fee02e8130e in KWin::Workspace::updateOutputConfiguration() () at /lib/x86_64-linux-gnu/libkwin.so.6
#8  0x00007fee02e81d9f in KWin::Workspace::slotOutputBackendOutputsQueried() () at /lib/x86_64-linux-gnu/libkwin.so.6
#9  0x00007fee001e4443 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#10 0x00007fee02eea30a in KWin::DrmBackend::updateOutputs() () at /lib/x86_64-linux-gnu/libkwin.so.6
#11 0x00007fee02eeaab0 in KWin::DrmBackend::handleUdevEvent() () at /lib/x86_64-linux-gnu/libkwin.so.6
#12 0x00007fee001e4443 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#13 0x00007fee001e6db3 in QSocketNotifier::activated(QSocketDescriptor, QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#14 0x00007fee001e98fb in QSocketNotifier::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#15 0x00007fee011b49b5 in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
    at /lib/x86_64-linux-gnu/libQt6Widgets.so.6
#16 0x00007fee001965b0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#17 0x00007fee002e3e64 in QEventDispatcherUNIXPrivate::activateSocketNotifiers() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#18 0x00007fee002e44b9 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /lib/x86_64-linux-gnu/libQt6Core.so.6
#19 0x00007fee00bba751 in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /lib/x86_64-linux-gnu/libQt6Gui.so.6
#20 0x00007fee00198893 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#21 0x00007fee0019a18a in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#22 0x000055d67d676498 in ??? ()
#23 0x00007fedffa33ca8 in __libc_start_call_main
    (main=main@entry=0x55d67d674510, argc=argc@entry=14, argv=argv@entry=0x7fffe594adb8)
    at ../sysdeps/nptl/libc_start_call_main.h:58
#24 0x00007fedffa33d65 in __libc_start_main_impl
    (main=0x55d67d674510, argc=14, argv=0x7fffe594adb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe594ada8) at ../csu/libc-start.c:360
#25 0x000055d67d678121 in ??? ()
(gdb)

The backtrace is still missing debug symbols for the following lines that we need to figure out exactly what's going wrong:

#9  0x00007fee001e4443 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6

Please install the necessary development packages for this from your distro. The link I sent should help with this. Thanks.

(In reply to TraceyC from comment #4)
> The backtrace is still missing debug symbols for the following lines that we
> need to figure out exactly what's going wrong:
> 
> #9  0x00007fee001e4443 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
> 
> Please install the necessary development packages for this from your distro.
> The link I sent should help with this. Thanks.

Ok, I figured out how to install the debug symbol package for libqt6core. This is the new backtrace from the same event. Let me know if you need anything else. Thanks

joshua@joshuas-hackpro:~$ sudo coredumpctl gdb 3138
           PID: 3138 (kwin_wayland)
           UID: 1000 (joshua)
           GID: 1000 (joshua)
        Signal: 11 (SEGV)
     Timestamp: Fri 2025-03-21 10:42:50 PDT (6 days ago)
  Command Line: /usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :1 --xwayland-xauthority /run/user/1000/xauth_ATRJGF --xwayland
    Executable: /usr/bin/kwin_wayland
 Control Group: /user.slice/user-1000.slice/user@1000.service/session.slice/plasma-kwin_wayland.service
          Unit: user@1000.service
     User Unit: plasma-kwin_wayland.service
         Slice: user-1000.slice
     Owner UID: 1000 (joshua)
       Boot ID: f1cbacc60c8f4baf903d580eadfef59b
    Machine ID: 81c6599577e54b39b939c11e630eff79
      Hostname: joshuas-hackpro
       Storage: /var/lib/systemd/coredump/core.kwin_wayland.1000.f1cbacc60c8f4baf903d580eadfef59b.3138.1742578970000000.zst (present)
  Size on Disk: 15.6M
       Message: Process 3138 (kwin_wayland) of user 1000 dumped core.
                
                Module libblkid.so.1 from deb util-linux-2.40.4-5.amd64
                Module libgomp.so.1 from deb gcc-14-14.2.0-17.amd64
                Module libatomic.so.1 from deb gcc-14-14.2.0-17.amd64
                Module libmount.so.1 from deb util-linux-2.40.4-5.amd64
                Module libzstd.so.1 from deb libzstd-1.5.6+dfsg-2.amd64
                Module libgcc_s.so.1 from deb gcc-14-14.2.0-17.amd64
                Module libudev.so.1 from deb systemd-257.4-3.amd64
                Module libstdc++.so.6 from deb gcc-14-14.2.0-17.amd64
                Module libsystemd.so.0 from deb systemd-257.4-3.amd64
                Stack trace of thread 3138:
                #0  0x00007fedffa9e8ac __pthread_kill_implementation (libc.so.6 + 0x948ac)
                #1  0x00007fedffa49c82 __GI_raise (libc.so.6 + 0x3fc82)
                #2  0x00007fee034246d2 _ZN6KCrash19defaultCrashHandlerEi (libKF6Crash.so.6 + 0x56d2)
                #3  0x00007fedffa49db0 n/a (libc.so.6 + 0x3fdb0)
                
                Stack trace of thread 3196:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3192:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa995ed __syscall_cancel (libc.so.6 + 0x8f5ed)
                #3  0x00007fedffb0de6e __GI_ppoll (libc.so.6 + 0x103e6e)
                #4  0x00007fedfea7324c n/a (libglib-2.0.so.0 + 0x5d24c)
                #5  0x00007fedfea738e0 g_main_context_iteration (libglib-2.0.so.0 + 0x5d8e0)
                #6  0x00007fee003a62a3 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a62a3)
                #7  0x00007fee00198893 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x198893)
                #8  0x00007fee0026a5fc _ZN7QThread4execEv (libQt6Core.so.6 + 0x26a5fc)
                #9  0x00007fee00f74f3e n/a (libQt6DBus.so.6 + 0x35f3e)
                #10 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #11 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #12 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3198:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3200:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3199:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3202:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3213:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c455 __pthread_cond_wait_common (libc.so.6 + 0x92455)
                #4  0x00007fee02ef8bd3 n/a (libkwin.so.6 + 0x4f8bd3)
                #5  0x00007fee02ef9209 n/a (libkwin.so.6 + 0x4f9209)
                #6  0x00007fee02ef96ad n/a (libkwin.so.6 + 0x4f96ad)
                #7  0x00007fedffaa1b17 __pthread_once_slow (libc.so.6 + 0x97b17)
                #8  0x00007fedffaa1b89 ___pthread_once (libc.so.6 + 0x97b89)
                #9  0x00007fee02ef5c78 n/a (libkwin.so.6 + 0x4f5c78)
                #10 0x00007fee00263035 n/a (libQt6Core.so.6 + 0x263035)
                #11 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #12 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #13 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3201:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3214:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fee02ef8ef1 n/a (libkwin.so.6 + 0x4f8ef1)
                #5  0x00007fee02ef9209 n/a (libkwin.so.6 + 0x4f9209)
                #6  0x00007fee02ef96ad n/a (libkwin.so.6 + 0x4f96ad)
                #7  0x00007fedffaa1b17 __pthread_once_slow (libc.so.6 + 0x97b17)
                #8  0x00007fedffaa1b89 ___pthread_once (libc.so.6 + 0x97b89)
                #9  0x00007fee02ef5c78 n/a (libkwin.so.6 + 0x4f5c78)
                #10 0x00007fee00263035 n/a (libQt6Core.so.6 + 0x263035)
                #11 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #12 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #13 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3212:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c455 __pthread_cond_wait_common (libc.so.6 + 0x92455)
                #4  0x00007fee02ef8bd3 n/a (libkwin.so.6 + 0x4f8bd3)
                #5  0x00007fee02ef9209 n/a (libkwin.so.6 + 0x4f9209)
                #6  0x00007fee02ef96ad n/a (libkwin.so.6 + 0x4f96ad)
                #7  0x00007fedffaa1b17 __pthread_once_slow (libc.so.6 + 0x97b17)
                #8  0x00007fedffaa1b89 ___pthread_once (libc.so.6 + 0x97b89)
                #9  0x00007fee02ef5c78 n/a (libkwin.so.6 + 0x4f5c78)
                #10 0x00007fee00263035 n/a (libQt6Core.so.6 + 0x263035)
                #11 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #12 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #13 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3226:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3229:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3257:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa995ed __syscall_cancel (libc.so.6 + 0x8f5ed)
                #3  0x00007fedffb0de6e __GI_ppoll (libc.so.6 + 0x103e6e)
                #4  0x00007fedfea7324c n/a (libglib-2.0.so.0 + 0x5d24c)
                #5  0x00007fedfea738e0 g_main_context_iteration (libglib-2.0.so.0 + 0x5d8e0)
                #6  0x00007fee003a62a3 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a62a3)
                #7  0x00007fee00198893 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x198893)
                #8  0x00007fee0026a5fc _ZN7QThread4execEv (libQt6Core.so.6 + 0x26a5fc)
                #9  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #10 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #11 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3218:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa995ed __syscall_cancel (libc.so.6 + 0x8f5ed)
                #3  0x00007fedffb0de6e __GI_ppoll (libc.so.6 + 0x103e6e)
                #4  0x00007fedfea7324c n/a (libglib-2.0.so.0 + 0x5d24c)
                #5  0x00007fedfea738e0 g_main_context_iteration (libglib-2.0.so.0 + 0x5d8e0)
                #6  0x00007fee003a62a3 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a62a3)
                #7  0x00007fee00198893 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x198893)
                #8  0x00007fee0026a5fc _ZN7QThread4execEv (libQt6Core.so.6 + 0x26a5fc)
                #9  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #10 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #11 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 6704:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3197:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3215:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fee02ef8ef1 n/a (libkwin.so.6 + 0x4f8ef1)
                #5  0x00007fee02ef9209 n/a (libkwin.so.6 + 0x4f9209)
                #6  0x00007fee02ef96ad n/a (libkwin.so.6 + 0x4f96ad)
                #7  0x00007fedffaa1b17 __pthread_once_slow (libc.so.6 + 0x97b17)
                #8  0x00007fedffaa1b89 ___pthread_once (libc.so.6 + 0x97b89)
                #9  0x00007fee02ef5c78 n/a (libkwin.so.6 + 0x4f5c78)
                #10 0x00007fee00263035 n/a (libQt6Core.so.6 + 0x263035)
                #11 0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #12 0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #13 0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3258:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa995ed __syscall_cancel (libc.so.6 + 0x8f5ed)
                #3  0x00007fedffb1aa6d epoll_wait (libc.so.6 + 0x110a6d)
                #4  0x00007feddc0f18b6 n/a (libspa-support.so + 0x1c8b6)
                #5  0x00007feddc0dcb7d n/a (libspa-support.so + 0x7b7d)
                #6  0x00007fedba7bdc75 n/a (libpipewire-0.3.so.0 + 0xb2c75)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3227:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3260:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 183620:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c25d __pthread_cond_wait_common (libc.so.6 + 0x9225d)
                #4  0x00007fee002df7b9 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2df7b9)
                #5  0x00007fee002e2bee n/a (libQt6Core.so.6 + 0x2e2bee)
                #6  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 6703:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 87433:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 183622:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c25d __pthread_cond_wait_common (libc.so.6 + 0x9225d)
                #4  0x00007fee002df7b9 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2df7b9)
                #5  0x00007fee002e2bee n/a (libQt6Core.so.6 + 0x2e2bee)
                #6  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 183623:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c25d __pthread_cond_wait_common (libc.so.6 + 0x9225d)
                #4  0x00007fee002df7b9 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2df7b9)
                #5  0x00007fee002e2bee n/a (libQt6Core.so.6 + 0x2e2bee)
                #6  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 183621:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c25d __pthread_cond_wait_common (libc.so.6 + 0x9225d)
                #4  0x00007fee002df7b9 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x2df7b9)
                #5  0x00007fee002e2bee n/a (libQt6Core.so.6 + 0x2e2bee)
                #6  0x00007fee002e11ea n/a (libQt6Core.so.6 + 0x2e11ea)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                
                Stack trace of thread 3228:
                #0  0x00007fedffaa494e __syscall_cancel_arch (libc.so.6 + 0x9a94e)
                #1  0x00007fedffa995a8 __internal_syscall_cancel (libc.so.6 + 0x8f5a8)
                #2  0x00007fedffa99bdc __futex_abstimed_wait_common64 (libc.so.6 + 0x8fbdc)
                #3  0x00007fedffa9c098 __pthread_cond_wait_common (libc.so.6 + 0x92098)
                #4  0x00007fedf15afa1d n/a (libgallium-25.0.1-2.so + 0x5afa1d)
                #5  0x00007fedf157afeb n/a (libgallium-25.0.1-2.so + 0x57afeb)
                #6  0x00007fedf15af94b n/a (libgallium-25.0.1-2.so + 0x5af94b)
                #7  0x00007fedffa9cabd start_thread (libc.so.6 + 0x92abd)
                #8  0x00007fedffb1a7b8 __clone3 (libc.so.6 + 0x1107b8)
                ELF object binary architecture: AMD x86-64

GNU gdb (Debian 16.2-2) 16.2
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Reading symbols from /usr/bin/kwin_wayland...
(No debugging symbols found in /usr/bin/kwin_wayland)

warning: Can't open file /memfd:kwayland-shared (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:unknown-usage:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:JITCode:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:wayland-shm (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:xwayland-shared (deleted) during file-backed mapping note processing

warning: Can't open file /home/joshua/.cache/plasma_theme_Sweet-mars-custom.kcache (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:wayland-cursor (deleted) during file-backed mapping note processing

warning: Can't open file /dev/shm/.org.chromium.Chromium.tWYgnq (deleted) during file-backed mapping note processing

warning: Can't open file /dev/shm/.org.chromium.Chromium.8T3A61 (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:JSVMStack:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:gdk-wayland (deleted) during file-backed mapping note processing
[New LWP 3138]
[New LWP 3196]
[New LWP 3192]
[New LWP 3198]
[New LWP 3200]
[New LWP 3199]
[New LWP 3202]
[New LWP 3213]
[New LWP 3201]
[New LWP 3214]
[New LWP 3212]
[New LWP 3226]
[New LWP 3229]
[New LWP 3257]
[New LWP 3218]
[New LWP 6704]
[New LWP 3197]
[New LWP 3215]
[New LWP 3258]
[New LWP 3227]
--Type <RET> for more, q to quit, c to continue without paging--
[New LWP 3260]
[New LWP 183620]
[New LWP 6703]
[New LWP 87433]
[New LWP 183622]
[New LWP 183623]
[New LWP 183621]
[New LWP 3228]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :1 --xwayland-xauthority /run/user/1000/xauth_ATRJGF --xwayland'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0)
    at ./nptl/pthread_kill.c:44

warning: 44     ./nptl/pthread_kill.c: No such file or directory
[Current thread is 1 (Thread 0x7fedf9dac280 (LWP 3138))]
warning: File "/home/joshua/.gdbinit" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
To enable execution of this file add
        add-auto-load-safe-path /home/joshua/.gdbinit
line to your configuration file "/root/.config/gdb/gdbinit".
To completely disable this security protection add
        set auto-load safe-path /
line to your configuration file "/root/.config/gdb/gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
        info "(gdb)Auto-loading safe path"
(gdb) bt
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0)
    at ./nptl/pthread_kill.c:44
#1  0x00007fedffa9e94f in __pthread_kill_internal (threadid=<optimized out>, signo=11) at ./nptl/pthread_kill.c:89
#2  0x00007fedffa49c82 in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26
#3  0x00007fee034246d2 in KCrash::defaultCrashHandler(int) () at /lib/x86_64-linux-gnu/libKF6Crash.so.6
#4  0x00007fedffa49db0 in <signal handler called> () at /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ??? ()
#6  0x00007fee02e77b90 in KWin::Workspace::assignBrightnessDevices() () at /lib/x86_64-linux-gnu/libkwin.so.6
#7  0x00007fee02e8130e in KWin::Workspace::updateOutputConfiguration() () at /lib/x86_64-linux-gnu/libkwin.so.6
#8  0x00007fee02e81d9f in KWin::Workspace::slotOutputBackendOutputsQueried() () at /lib/x86_64-linux-gnu/libkwin.so.6
#9  0x00007fee001e4443 in QtPrivate::QSlotObjectBase::call
    (this=<optimized out>, r=0x55d6a7bb6aa0, a=0x7fffe594a0c8, this=<optimized out>, r=<optimized out>, a=<optimized out>)
    at ./src/corelib/kernel/qobjectdefs_impl.h:486
#10 doActivate<false> (sender=0x55d6a79632f0, signal_index=3, argv=0x7fffe594a0c8) at ./src/corelib/kernel/qobject.cpp:4115
#11 0x00007fee02eea30a in KWin::DrmBackend::updateOutputs() () at /lib/x86_64-linux-gnu/libkwin.so.6
#12 0x00007fee02eeaab0 in KWin::DrmBackend::handleUdevEvent() () at /lib/x86_64-linux-gnu/libkwin.so.6
#13 0x00007fee001e4443 in QtPrivate::QSlotObjectBase::call
    (this=<optimized out>, r=0x55d6a79632f0, a=0x7fffe594a3b0, this=<optimized out>, r=<optimized out>, a=<optimized out>)
    at ./src/corelib/kernel/qobjectdefs_impl.h:486
#14 doActivate<false> (sender=0x55d6a7d2b4b0, signal_index=3, argv=0x7fffe594a3b0) at ./src/corelib/kernel/qobject.cpp:4115
#15 0x00007fee001e6db3 in QSocketNotifier::activated (this=this@entry=0x55d6a7d2b4b0, _t1=..., _t2=<optimized out>, _t3=...)
    at ./obj-x86_64-linux-gnu/src/corelib/Core_autogen/include/moc_qsocketnotifier.cpp:198
#16 0x00007fee001e98fb in QSocketNotifier::event (this=0x55d6a7d2b4b0, e=<optimized out>)
    at ./src/corelib/kernel/qsocketnotifier.cpp:327
#17 0x00007fee011b49b5 in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
    at /lib/x86_64-linux-gnu/libQt6Widgets.so.6
#18 0x00007fee001965b0 in QCoreApplication::notifyInternal2 (receiver=0x55d6a7d2b4b0, event=0x7fffe594a4f0)
    at ./src/corelib/kernel/qcoreapplication.cpp:1172
#19 0x00007fee002e3e64 in QEventDispatcherUNIXPrivate::activateSocketNotifiers (this=this@entry=0x55d6a78c1800)
    at ./src/corelib/kernel/qeventdispatcher_unix.cpp:254
#20 0x00007fee002e44b9 in QEventDispatcherUNIX::processEvents (this=<optimized out>, flags=...)
    at ./src/corelib/kernel/qeventdispatcher_unix.cpp:470
#21 0x00007fee00bba751 in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /lib/x86_64-linux-gnu/libQt6Gui.so.6
#22 0x00007fee00198893 in QEventLoop::exec (this=this@entry=0x7fffe594a6b0, flags=..., flags@entry=...)
    at ./src/corelib/global/qflags.h:34
#23 0x00007fee0019a18a in QCoreApplication::exec () at ./src/corelib/global/qflags.h:74
--Type <RET> for more, q to quit, c to continue without paging--
#24 0x000055d67d676498 in ??? ()
#25 0x00007fedffa33ca8 in __libc_start_call_main
    (main=main@entry=0x55d67d674510, argc=argc@entry=14, argv=argv@entry=0x7fffe594adb8)
    at ../sysdeps/nptl/libc_start_call_main.h:58
#26 0x00007fedffa33d65 in __libc_start_main_impl
    (main=0x55d67d674510, argc=14, argv=0x7fffe594adb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe594ada8) at ../csu/libc-start.c:360
#27 0x000055d67d678121 in ??? ()
(gdb)

Thanks for the more complete backtrace. This is helpful. I'll let one of the more experienced kwin developers take it from here.
I don't see any other bugs or reports on Sentry with this backtrace yet.